11.30.-1
U.S. Patent No. 7,501,026 B2: The Procter & Gamble Company has been awarded a U.S. patent for a process of cleaning a hard surface. The process entails applying an acidic liquid hard surface cleaner composition with a pH of 3-6.5 onto a hard surface in the form of a spray. The composition is comprised of approximately 0.0001-5% by weight of the total composition of a hydrophobically modified ethoxylated polyurethane, silicone glycol polymers and n-butoxy propoxy propanol.